Linearity compensations for a digital variable optical attenuator

Zhonghui Cao; Huiming Yan; Xingkun Wu

doi:10.1117/12.575777

17 January 2005 Linearity compensations for a digital variable optical attenuator

Zhonghui Cao, Huiming Yan, Xingkun Wu

Author Affiliations +

Proceedings Volume 5644, Optoelectronic Devices and Integration; (2005) https://doi.org/10.1117/12.575777
Event: Photonics Asia, 2004, Beijing, China

Abstract

A novel digital micro-machined variable optical attenuator (VOA) capable of 40dB dynamic range is described. The device consists of an electromagnetically actuated shutter interposed in a fiber collimator gap and allows adjustment of optical attenuation stepwise in response to inputting TTL pulses. A linear response with respect to driving pulses was achieved by incorporation of a compensation mechanism in the design. Measured performance of the VOA is reported and the characteristics of the device were analyzed with a numerical simulation based on scalar wave theory. The VOA is scalable to a discrete array for the implementation of channel equalization in WDM systems for the realization of high capacity cross-connects.

Citation Download Citation

Zhonghui Cao, Huiming Yan, and Xingkun Wu "Linearity compensations for a digital variable optical attenuator", Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); https://doi.org/10.1117/12.575777

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